On the Classification <f lh ' I Fishes. Ill brighter coloured than the back. A bright yellow streak behind each ear and a conspicuous bright yellow Btripe running internally down the Eronl of the thigh to the h Anterior surface of leg-i covered to the digits with hairs speckled yellow and black. Loe. Peru. One Bpecimen (type) presented to the Zoo! >gical Society by Mr. B. Chavez, who brought it from the "Amazons." A second procured by Mr. A. B. Pratt on the Marona River, Peru. In Afyoprocta acoucfty, Linn., from Guiana, the hairs are Bpeckled with rich rusty yellow, and many of those on the hind-quarters are wholly black, the underside is rusty orange all over, and the Erontsofthe legs are almost the same colour as the belly and unspeckled. XV TI. — The Classification of the Percoid Fishes. By C. Tate Regan, M.A. (Published by permission of the Trustees of the British Museum.) The large and varied order Percomorphi occupies a central position among the Teleostean fishes. On the one hand it appears to be derived from the Berycomorphi, and on the other it seems to have given rise to a number of specialized offshoots, which may he regarded as ordinally distinct : Seleroparei. I leterosomata, Plectognathi. Discocephali, Xeno-pterygii, Pediculati, Symbranchii, and Opisthomi. The Percomorphi may be thus defined : — "Symmetrical acanthopterous physoclists with normal dorsal I'm, pelvic lins never more than 6-rayed, Bubabdo-initial, thoracic, jugular, or mental in position, the pelvic bones typically attached to the: cleithra : principal caudal rays not more than 17. No orbitosphenoid. Second sub-orbital not forming a stay for the praeoperculum. Post-tcnij oral more or less distinctly forked." At present i am inclined to recognize thirteen suborders, viz. Percoidea, Trichiuroidea, Scombroidea, Siganoidea, Teu-thidoidea, Kurtoidea, Gobioidca, Blennioidea, St ion oidea, Anabantoidea, Mugiloidea, Polynemoidi But it is largely a matter of opinion whether sonic of these may not be regarded as ordiually distinct, or whether (tiers should not rank merely as divisions of the Pen-, idea. 1 have already dealt with the Trichiuroidea, Scombroidea,
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